Jacquard cylinder



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Application filed March 6, 1923. Serial No. 623,263.

To all whom it may concern:

Be it known that I, JOHN HENRY PRU-- went, a subject of the King of Great Britain, residingat 104i Station Hill, Kidderminster, in the county of Worcester, England, have invented certain new and useful Improvements in Jacquard Cylinders; and I do hereby declare the following to be a full, clear, and exact description of the same. I

My invention comprises improvements in jacquard cylinders, more particularly for use in carpet weaving'and has for its object to provide an improved construction of cylinder of the kind designed toobviate the disadvantages arising from warping, expansion or contraction of the common type of cylinder formed from a block of wood drilled with holes to register with the needle plate.

According to this invention, the cylinder is made from a casting, or from two or more castings, each provided with'a recess on its surfaces, each recess corresponding in area with the area usually drilled as previously described, these recesses having three or more longitudinal bars across their open faces situated between the rows of holes in the cards, so as to properly support the latter against the end thrust of the needles.

Referring to the drawings Figure 1 is a side elevation of a jacquard cylinder constructed according to this invention.

Figure 2 is an end view of same.

Figure 3 is a similar view to Figure 1 but showing one of the cards in position.

Figure 4 is a longitudinal section on the line 4 --4 in Figure 2.

Figure 5 is a transverse section on the line 5-5 in Figure 1.

Figure 6 is a similar section of a modified form.

Figure 7 is a perspective view of a portion of one of the stays.

In carryng this invention into practice as illustrated by the accompanying drawings, the cylinder 1 is conveniently made in the form of an aluminum or other casting and is of a more or less skeleton formation with a central hole2 for the reception of the shaft and with or without a hub portion.

When, as illustrated by Figures 1 to 5, a hub portion 8 is provided, it is preferably formed with longitudinal members 9 and spaced flanges 4 which provide recesses or holes 3 around its periphery.

The cylinder may be of a hexagonal or other polygonal form as illustrated, and each. surface would be cored out in casting, so as to leave a series of recesses 8 corresponding approximately with those surfaces where the needles operate, each. recess being separated from the next recess by the flanges 4, which latter can be connected together and to the cylinder ends by means of the longitudinal members 5 cast thereto at the angles. In practice, these flanges and the cylinder ends are machined to provide a series of parallel slots 6 which receive narrow metal strips 7 which are fixed therein, so that each recessed area is thereby and by the cast longitudinal bars 5, divided up into a number of longitudinal slots, each row of slots corresponding with a row or rows of needles.

The metal strips 7 are preferably secured within the slots 6 by forming the slots slightly deeper than the metal strips and swaging the edges of the slots over them. Holes or recesses 16' may also be provided in the webs or walls 4: in order to allow for the contingency of a needle coming into contact with any one of such webs or walls, the holes or recesses allowing the needles to pass and thereby prevent them being broken.

In the modified construction illustrated in Figures 6 and 7, the spaced flanges 11 are located at spaced intervals along the axis of the shaft as before, but they are formed integral with and connected together by the cylindrical hub 12.

The longitudinal bars 5 are provided as before to extend between the flanges and form a support for the cards.

The cards are secured to the cylinder in the usual way by the projections 13, but these projections are preferably adjustable and are provided with slots 14 engaging with pins or set screws 15.

The complete cylinder may be one unit of the proper length for several cards to suit any pitch, or the cylinder may be formed of two or more independent cy1inder units, each of a length to suit one card, and these will be mounted on to oneshaft as aforesaid. with means for adjusting them longitudinally on the shaft if necessary.

What I claim then is 1. A jacquard cylinder comprising at Y l-hub extending the Whole length of the unit,

least one unit, spaced flanges on. said unit, havlng' peripheral slots, at-least one longitudinally extending'member connecting said flanges, and longitudinal bars secured With spacedflang'es on said hub, and longitudinal barssecured With theslots inf theflange and itorming asupport for-the cards.

A jacquard cylinder 'vcomprising at .least one unit, polygonal shaped flanges on said unit having peripheral slots, longitudinal members extending from the periphcries of and connecting said flanges, and

longitudinal bars secured with the slots in the flanges and forming a support for the cards V, 4. A jacquard, cylinder comprising at least one unit, polygonal shaped flanges on said unit having peripheral slots, 1o-ngitudinal. connecting members disposed between the peripheral corners on'the flanges,

Won-said unit adapted to secure the cards.

5. A jacquard cylinder comprising at least one unit, spaced flanges on said unit having external holes into Which the needles can pass, at least one longitudinally extending member connecting [said flanges, and longitudinal bars extending between said flangesforminga support for the cards.

-6. A jacquard cylinder comprising at least one unit, polygonal shaped flanges on said unit, spaced fiangeson said unit having external holes into whiehthe, needles can pass, at least one longitudinally extending member connecting sald flanges, and longitudinal bars extending between said "flanges,

forming a support for the cards.

In Witness whereof I afiix mysignature.

' J. H. PRIUN E'L-L. 

